Bi-directional perfusion cannula



FIG. 1 is an upper rear perspective view of the bi-directional perfusion cannula;

FIG. 2 is a side view of the bi-directional perfusion cannula;

FIG. 3 is a front view of the bi-directional perfusion cannula;

FIG. 4 is a rear view of the bi-directional perfusion cannula;

FIG. 5 is a top view of the bi-directional perfusion cannula;

FIG. 6 is a bottom view of the bi-directional perfusion cannula; and,

FIG. 7 is a lower perspective view of the bi-directional perfusion cannula.

The attachment piece shown in broken lines depicts environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a bi-directional perfusion cannula, as shown and described. 